A top tier opponent like Crenshaw could take him down in the primary for sure. He's clearly a long term liability and an underperformer vs. generic R. This latest misstep may not matter by itself, but it's one of many.
I can't think of any other guy who has such a national profile yet is despised by nearly everyone, even his own party
He very well may be despised by Republicans on the Hill, but I don't think it really has been sufficiently demonstrated that he is particularly unpopular among rank-and-file Republican voters, despite that being such a prominent narrative. If my recollection serves, his approval ratings were never particularly poor in recent years, and I believe they often eclipsed Cornyn's.
Well, a Yahoo/YouGov poll from about a week ago found Cruz at 24% approve, 49% disapprove. Do with that what you will.
It's not clear from context here, but I assume you're talking about their national polls?
Just thought I'd bump this, because according to the YouGov/Economist poll that came out today, Cruz is at 35% favorable / 48% unfavorable nationally among all voters, and 69% favorable / 20% unfavorable among Republicans. Among 2020 Trump voters, he's at 75% favorable / 16% unfavorable:
https://docs.cdn.yougov.com/bajzsg3506/econTabReport.pdf#table.98
